TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

how easy is the TBI to make fairly quick?

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Old Feb 28, 2001 | 02:59 AM
  #1  
3.1 firebird's Avatar
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From: st.louis
how easy is the TBI to make fairly quick?

I keep seeing posts about people running high 14's and what not with their TBI's. How much work does it take to hit a 14.5?
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Old Feb 28, 2001 | 08:13 AM
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From: Tempe, AZ
Car: 92 RS, 02 Tacoma, 2 73 Porsche 914s
heads, headers, chip reprogram, gears, intake.

about the same as it takes to have a 350 it 13.
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Old Feb 28, 2001 | 10:53 AM
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From: Davison / Troy ,Michigan
Car: 1991 Pontiac Firebird
Engine: 3.8
Transmission: 700r4
Axle/Gears: Dana 60
Hehehe, yeah, a lot of money and a lot of time. Sometimes I wonder if it is even worth it.

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Eric Natzke
91 Firebird 305 TBI
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Old Feb 28, 2001 | 05:00 PM
  #4  
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From: Tempe, AZ
Car: 92 RS, 02 Tacoma, 2 73 Porsche 914s
sometimes i wonder if your mom was worth it.
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Old Feb 28, 2001 | 05:05 PM
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
It takes somebody from NJ to hit low 14's with stock 305 L03 bottom end AND stock "peanut" cam. I would do exhaust, then intake, then heads. Heads seem to be the L03's biggest draw back but it's also the most expensive to replace that is why I'd leave it to be the last bolt on. 1.6 rockers with stock cam help if you've done intake/exhaust w/heads. If not then the 1.6 rockers are worthless. I don't see the huge problem with people and making TBI powerful. It's not like it's that different from a TPI or carb car. It's the imbetween so why don't more TBI peeps do anything? I think it might be because all the TPI guys have convinced them that it's a waste of money. Another reason might be because the RS isn't exactly a special edition and people that bought the RS and TBI setups didn't care for speed, they just liked the looks and then they junked the car or sold it off for a new car. Anybody else get that feeling? What happened to all the 91-92 RS camaro's? I'm seeing less and less thirdgen's which is fine by me.
Back to subject (sorry about the side note, I do that a lot), to get into the mid 14's takes work and money just like any other car. An option is to just get a performance crate 350 and swap it in. I'm doing a swap that should cost me just around $3000. I have all the exhaust work done and trans is built so I just went for it, I should be in the high 13's with the peg leg 3.08 and mid 13's with the future 12 bolt.

------------------
, Jon (91 RS too many mods to list)
Dale Earnhart, you have done so much, you will be missed.
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Old Feb 28, 2001 | 11:09 PM
  #6  
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From: FT. Belvoir, VA
Sorry man, I looked specificly for this RS for 2 months 305/5spd and no t-tops or power options.I came across a few Z-28's but i planned on building a so called sleeper from day one.......sounds crazy but i wouldn't trade my RS for a z any day of the week....

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92RS,POLO GREEN
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Old Mar 1, 2001 | 02:06 PM
  #7  
snflupigus's Avatar
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From: Tempe, AZ
Car: 92 RS, 02 Tacoma, 2 73 Porsche 914s
eric that was a joke.

but if you are serious. im sorry and meant nothing by it, i didnt know, and i will delete it.

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Old Mar 1, 2001 | 02:19 PM
  #8  
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I love the '91,'92 RS. I think they don't mess with the engine much because like mine, its performed flawlessly. 155k miles and runs like clockwork. Ripping off half the engine might mess that up and "rock the boat". What if a prefectly reliable car turned to crap by messing with it? It has enough power... for now .

------------------
-Tas
'89 Formula WS-6
[soon to be Torch Red with black hood and headlights ]

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

Super GRK_Taz World
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[This message has been edited by Tas (edited March 01, 2001).]
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Old Mar 1, 2001 | 05:22 PM
  #9  
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From: Ewing, NJ
truely it is rather easy to be intothe mid 14's with this motor. i spent all the time doing the trial and error for you guys just to prove it
my latest revision of the 14 second formula:
1. a posi and 3.73 gears
2. 14x3 flat base open element
3. ultimate tbi
4a. auto guys, a 2400 stall converter and a good shift kit, ALDL manual converter lock up
4m. manual guys, a short shifter and practice launching clean.
5. make your next set of tires something that actually grips not bfg zr junkers or bad years. nitto or or bfg drag radials preferred.
6. learn to stage shallow.
7. a sensable diet, remove spare and stereo equipment.

that should put most people well into the 14's assuming that their engine is in good shape. if you decide to move onto heads, cams, and intakes the 12's are very doable.

lata
tim

------------------
91 Camaro RS-LO3,Auto.
14.215@94.30 w/ 1.917 60'

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Old Mar 1, 2001 | 06:50 PM
  #10  
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From: Sanford
with posi and gears ill be hitting 14's w/ not much done. w/ a little more i sould be low 14's maybe 13's and that would be nice

hth,
RS

------------------
1992 Camaro RS
Mods:
Custom chip, 14x3 Open element w/ K&N filter, MSD 6a, MSD GM blaster Coil ,MSD 8.5 SC wires, AFPR,Fuel Pressure gauge,A/F guage, 3-Row Al rad. , 180* t-stat,Proform 1.5 roller rockers, Hooker 1 5/8 headers, 3" Catco cat, 3" Hooker Aero Chamber cat-back, "Ultimate TBI" mods, !Cat

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454 TB,Victor Vortec intake,Vac FPR,LT1 cam,Roller timing set,"glass" hood
65# inj,new chip

Best Time: 15.279@89.02MPH
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